(1) The distance along a surveyed line from a survey station or the last whole numbered survey point to a supplementary point. For example, if a stake is set at 515. 56 feet from the initial point of a surveyed line and is does not mark the end of that line, the whole numbered 500-foot point on the line is station No. 5; the stake is a plus station (No. 5+15. 56), and the 15. 56 is a plus distance. (2) A fractional part of the length of a course from the beginning of the course to a specified point on the course.